Craig rescues a woman that develops a fatal attraction to him, placing Craig's wife Gina in mortal danger. A fishing trip goes horribly wrong when the boat explodes! Mitch and his mentor Al have to rescue its passengers, including Mitch's son Hobie trapped underwater in the sunken wreckage.
Playing hooky from summer school, Lt. Mitch Buchannon's son Hobie gets dangerously involved with reckless jet skiers.
During the hottest day of the summer, Craig has to choose between his career as a lawyer and the job he loves being a Baywatch lifeguard. The choice is made when two boys – one the son of Mitch's old buddy who is in hiding – get trapped in a storm drain rapidly filling with water, and Mitch and Craig have to take extraordinary measures to save them.
Eddie must come to terms with his past when he confronts a gang of "surf rats" lead by a former friend from his reform school days. Trevor begins to doubt his lifeguarding skill when his girlfriend almost drowns because of his arrogance.
Hobie overhears his divorcing parents arguing and boats away to a deserted island with two friends, only to have their boat drift away, leaving them stranded on the island with modern day pirates! Meanwhile, Mitch assigns Shauni and Eddie, who are constantly bickering, to work a 24-hour shift together.
After their plane crashes, two robbers attempt to retrieve their suitcase full of stolen money from the ocean. Meanwhile, Mitch and Gayle go to court over custody of Hobie.
A wealthy older man drowns under suspicious circumstances in front of Jill Riley's tower. Jill endures the pain of losing her first victim, becoming obsessed with unravelling whether his death was an accidental drowning, or murder.
While housesitting for Craig and Gina, Eddie takes in a runaway whose life is threatened by her mobster boyfriend. Meanwhile, Trevor enters Baywatch rookie school to become a certified LA County lifeguard.
Eddie warns Shauni that her new boyfriend Andrew is not a good guy. She ignores Eddie until Andrew gives her a black eye. Meanwhile, Craig and Mitch must stop an out of control party boat before it crashes into the crowded Santa Monica pier.
Several people are murdered at the beach by a mysterious man in ghoulish make-up. On the night of one of the murders, Eddie is knocked unconscious by what he describes as a "cretin." Eddie's report is met with skepticism until the identity of the killer is dramatically revealed.
During a savage tropical storm, Eddie and Shauni take refuge in the Pomeroy's loft, turning a cold night into the start of a hot romance. In the massive downpour, two escaped convicts shoot Garner and leave him to die, then break into Baywatch headquarters and take everyone hostage.
Craig gets jealous when Mitch reunites with his and Craig’s old flame. Meanwhile, Eddie buys a classic Mustang for cheap, only to get arrested for possession of a stolen car.
Jill teams up with Trevor to win a beach volleyball tournament, but all she really wants is to beat her former lover's team. Eddie and Shauni team up to rescue a young girl trapped in an armored car that topples off the pier into the ocean, trapping Eddie and Shauni inside as well!
Mitch gets a surprise visit from his old, mischievous Navy S.E.A.L. buddy and ex-Baywatch lifeguard, John Cort, adding serious problems in their already complicated relationship. And Shauni and Jill fight a battle of the sexes against a shady sandwich vendor.
Craig, Cort and Eddie take a road trip to Mexico, but their vacation south of the border turns ugly when they tangle with an angry American tourist. Meanwhile, Captian Thorpe becomes Mitch's uninvited house guest. Hobie develops a crush on Shauni.
Cort and Eddie train lifeguards at a water park, but someone is vandalizing the waterslides, putting people's lives in danger. Meanwhile, Captain Thorpe wants Shauni fired for posing in a provocative calendar.
Eddie and Cort happen upon an illegal gambling ship. Meanwhile, Mitch begins to spend more time with Hobie's English teacher – a liaison that embarrasses Hobie beyond belief.
After losing his rookie partner in the mysterious rescue of what he thinks is a ghost, Eddie gets unwittingly caught up in a 70-year-old legend. Meanwhile, Hobie attempts to help a friend find a new home for her dog.
A local restaurateur puts up a $25,000 bounty for the largest shark caught during the weekend's Shark Derby he's sponsoring. To attract more sharks, he illegally chums the waters, drawing hundreds of sharks uncommonly close to shore, putting hundreds of lives at risk.
Cort promises to come up with $10,000 for a nursing home, but he needs Mitch and Craig's help to compete in a Long Beach-to-Catalina water-skiing race with a big cash prize. Shauni’s traumatic fear of the ocean after Jill’s death threatens her future with Baywatch.
Craig, Mitch and Garner go for a weekend hang-gliding trip, but Mitch has a serious accident, and ends up facing death before the fangs of a rattlesnake! Cort reacquaints himself with a woman who has a shocking secret.
A massive earthquake destroys Baywatch headquarters and leaves Gina's life hanging in the balance. Meanwhile, Cort and Craig are trapped in the ocean. And Eddie is the only one left who can help a pregnant woman going into labor.